Sahamir Shahrir Razey, Kamarudin Muhammad Akmal, Ripolles Teresa S, Baranwal Ajay Kumar, Kapil Gaurav, Shen Qing, Segawa Hiroshi, Bisquert Juan, Hayase Shuzi
Info-Powered Energy System Research Center (i-PERC), The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan.
Instituto de Ciencia de los Materiales, University of Valencia, Carrer del Catedrátic José Beltrán Martinez, 2, 46980 Paterna, Valencia, Spain.
J Phys Chem Lett. 2022 Apr 7;13(13):3130-3137. doi: 10.1021/acs.jpclett.2c00699. Epub 2022 Mar 31.
Overcoming loss to increase the efficiency of perovskite solar cells (PSCs) has been aggressively studied. In this work, we introduce and compare rubidium iodide (RbI) and potassium iodide (KI) alkali metal halides (AMHs) as dopants in a tin-lead (SnPb)-based perovskite system to improve the performance of PSCs by enhancing their . Improvement in terms of surface morphology, crystallinity, charge transfer, and carrier transport in the SnPb perovskites was observed with the addition of AMH dopants. Significant power conversion efficiency improvement has been achieved with the incorporation of either dopant, and the highest efficiency was 21.04% in SnPb mixed halide PSCs when the RbI dopant was employed. In conclusion, we can outline the enhancement strategy that yields a remarkable efficiency of >20% with a smaller loss and improved storage, light, and thermal stability in SnPb PSCs via doping engineering.
克服损耗以提高钙钛矿太阳能电池（PSC）的效率已得到积极研究。在这项工作中，我们引入并比较了碘化铷（RbI）和碘化钾（KI）碱金属卤化物（AMH）作为锡铅（SnPb）基钙钛矿体系中的掺杂剂，通过增强其性能来提高PSC的性能。添加AMH掺杂剂后，观察到SnPb钙钛矿在表面形貌、结晶度、电荷转移和载流子传输方面有所改善。掺入任何一种掺杂剂都实现了显著的功率转换效率提高，当使用RbI掺杂剂时，SnPb混合卤化物PSC的最高效率为21.04%。总之，我们可以概述通过掺杂工程在SnPb PSC中实现大于20%的显著效率、更小的损耗以及改善存储、光和热稳定性的增强策略。
